`timescale 1ns/1ps
module multi_tb (
    
);

reg  [3:0] a,b;
wire [7:0] out;
multi multi(
     .a(a)
    ,.b(b)
    ,.out(out)
);

initial begin
   a = 4'b0000;
   b = 4'b0000;
   forever begin
     #1 a = 4'b1000;
     #1 b = 4'b0100;
     #1 a = 4'b0011;
     #1 b = 4'b1000;
     #1 a = 4'b0110;
     #1 b = 4'b1111;
   end
 end
endmodule //multi_tb